It's not completely clear whether Thompson was physically in the room with Khloe, or just at the hospital, for the birth of their first child together.

Prior to the news, Khloe may have dropped some hints that she was in labor. On Monday, she shared an Instagram photo of her kissing Thompson, captioned: "We are ready whenever you are little mama."

As TMZ pointed out, at the weekend, Kylie Jenner's OB/GYN Dr. Thais Aliabadi posted a cryptic photo from a hospital with the name blurred out in the background. "I have the best job in the world.... #mysaturdaynight #lovemypatients #allbymyself #doctorswhotravel," she captioned the photo, suggesting that the LA-based doctor had traveled somewhere — quite possibly, Cleveland, where Khloe gave birth.

However, as Khloe geared up to give birth, reports that Thompson had cheated throughout her pregnancy overshadowed speculation that she was in labor.

Page Six later identified the woman seen with Thompson as 28-year-old model Lani Blair and reported that the two spent four hours together at the Cleveland Cavaliers' hotel (who were in the city to play the New York Knicks). Later, The Shade Room posted Splash News photos that showed Thompson walking into the hotel again with Blair at 5 a.m. the following morning.

"Tristan has been consistently cheating on Khloe. He's a serial cheater. And there will be more women to come out of the woodwork," a source recently told People. "[Family and friends] are heartbroken for Khloe. They didn't realize how deceptive Tristan could really be."

Also on Tuesday, April 10, TMZ published a surveillance video that was reportedly taken back in October — when Kardashian was three months pregnant — of Thompson appearing to cheat on her with two women at a hookah lounge outside Washington, DC. The video was recorded on October 7, 2017, the night before Thompson and the Cleveland Cavaliers played the Washington Wizards.

As yet, we don't know if their newborn has a name, but Khloe may have given us a hint in January during an appearance on "The Ellen DeGeneres Show."

During the interview, they spoke about potential baby names, and Khloe said that if she were to have a girl she wouldn't know what to call her. "For a girl, I don't even know where to begin," she told DeGeneres, adding that she would hypothetically give her a name that starts with a K or a T — K for the first initial of her own name, and T like Tristan.

In the same interview, Khloe did say that if she were to have a boy, she would want to name him Tristan Junior, so she may well opt to name her daughter Khloe Junior.

If Khloe goes with a K name for her daughter, she would be the only one of her siblings to buck their tradition of calling their kids names that begin with letters that aren't a K. Their mom Kris started something of a trend by giving all of her daughters a name beginning with the letter; the only Kardashian family member who doesn't have a name that starts with K is Rob, who was named after his father Robert Kardashian.